Turn on quilt mode in DM.

gm/lumafilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkGradientShader.h"
@@ skipping 79 matching lines @@
                                                   SK_ARRAY_COUNT(g1Colors),
                                                   SkShader::kClamp_TileMode));
         fGr2.reset(SkGradientShader::CreateLinear(g2Points,
                                                   g2Colors,
                                                   pos,
                                                   SK_ARRAY_COUNT(g2Colors),
                                                   SkShader::kClamp_TileMode));
     }
 
 protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
     virtual SkString onShortName() SK_OVERRIDE {
         return SkString("lumafilter");
     }
 
     virtual SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(600, 420);
     }
 
     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         SkXfermode::Mode modes[] = { SkXfermode::kSrcOver_Mode,
@@ skipping 34 matching lines @@
 private:
     SkAutoTUnref<SkColorFilter> fFilter;
     SkAutoTUnref<SkShader>      fGr1, fGr2;
 
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return SkNEW(LumaFilterGM); )